Blade holder assembly for an electric razor

Abstract

A blade holder assembly including a casing having a series of teeth along one side for smoothing the hairs or whiskers to be cut and a center opening, a slide plate received in the casing and two bottom mounting rods extended out of the center opening of the casing and coupled to a reciprocating mechanism, a lower blade holder coupled to the slide and having a series of fine cutting teeth and a series of coarse cutting teeth disposed at two opposite sides, an upper cutter blade having a series of fine cutting teeth at one side acted against the fine cutting teeth of the lower blade holder to cut hairs or whiskers, and an upper blade holder fastened to the casing to hold the upper cutter blade above the lower blade holder and having a sloping wall at one side pressed on the upper cutter blade and a series of coarse cutting teeth at an opposite side acted against the coarse cutting teeth of the lower blade holder to cut hairs or whiskers.

What is claimed is: 
     
       1. A blade holder assembly for an electric razor, comprising: a casing made of flat shape, having a series of teeth along one side thereof for smoothing hairs or whiskers to be cut, a center opening, and two coupling portions at two opposite ends thereof;   a slide plate received within said casing and reciprocated by the driving mechanism of an electric razor, said slide plate having two bottom mounting rods extended out of the center opening of said casing and coupled to the driving mechanism of an electric razor, and a top block raised from a top wall thereof;   a lower blade holder made from a flat metal plate and coupled to said slide plate, said lower blade holder comprising a series of fine cutting teeth and a series of coarse cutting teeth disposed along two opposite sides thereof, and a mounting hole, which receives the top block of said slide plate permitting said lower blade holder to be reciprocated by said slide plate;   an upper cutter blade made from a springy metal plate, having a series of fine cutting teeth disposed along one side thereof and acted against the fine cutting teeth of said lower blade holder to cut hairs or whiskers; and   an upper blade holder made from a flat metal plate fastened to said casing to hold said upper cutter blade above said lower blade holder, having a sloping wall longitudinally disposed at one side and pressed on said upper cutter blade, a series of coarse cutting teeth longitudinally disposed at an opposite end and acted against the coarse cutting teeth of said lower blade holder, and two opposite mounting wings disposed at two opposite ends and respectively fastened to the coupling portions of said casing.   
     
     
       2. The blade holder assembly of claim 1 wherein said casing comprises two opposite stop rods respectively disposed near said coupling portions to limit the reciprocating distance of said slide plate; said slide plate and said lower blade holder have end notches respectively vertically aligned at two opposite ends and moved relative to the stop rods of said casing. 
     
     
       3. The blade holder assembly of claim 1 wherein said lower blade holder comprises two pin holes disposed near two opposite ends thereof; said slide plate comprises two stub rods raised from a top wall thereof and respectively fitted into the pin holes on said lower blade holder. 
     
     
       4. The blade holder assembly of claim 1 wherein said upper cutter blade 5 has a plurality of transverse cuts. 
     
     
       5. The blade holder assembly of claim 1 wherein said upper cutter blade consists of a plurality of blades arranged in parallel and respectively fixed to said upper blade holder. 
     
     
       6. The blade holder assembly of claim 1 wherein said upper cutter blade comprises at least one row of slots disposed along the fine cutting teeth of said upper cutting blade. 
     
     
       7. The blade holder assembly of claim 1 wherein the coupling portions of said casing have a respective screw hole; the mounting wings of said upper blade holder have a respective through hole respectively connected to the screw holes on the coupling portions of said casing. 
     
     
       8. The blade holder assembly of claim 1 further comprising a springy tension plate disposed between said slide plate and said casing, said springy tension plate comprising a center opening, through which the bottom mounting rods of said slide plate pass, and two opposite end wings bilaterally curving upwards and respectively stopped against said slide plate at a bottom.